A number of smartwatches and other bands can measure heart rate, but they’re generally focused on fitness activities.

As previewed last month, Emvio is a specialized smartwatch that eschews apps and general notifications in favor of the primary task of measuring your heart rate variability as an indicator of stress level. As such, rather than use fancy color e-paper or LCDs, the watch face is a thin LED strip on a square slab that displays basic numbers. Rising stress levels are noted with a vibration. These are sent to a smartwatch that tracks stress levels over time and offers suggestions on how to calm down. The campaign owner, Darta Systems, seeks to raise $250,000 CAD (about $198,000 USD) by April 21st. Emvio watches cost $206 CAD (about $159 USD) although the campaign is offering early bird pricing as low as $167 (about $129 USD).

Emvio joins a number of products such as last fall’s successfully crowdfunded Olive smartband and the more versatile Spire wearable that measures breathing. But in an era where more smartwatches are measuring heart rate, much of its functionality could wind up being incorporated into an app.